INVESTIGADORES
ALVAREZ vera Alejandra
artículos
Título:
Effect of thermoplastic incorporation on the performance of thermosetting matrix
Autor/es:
ROMINA OLLIER; ARIEL STOCCHI; EXEQUIEL RODRIGEZ; VERA ALVAREZ
Revista:
Materials Sciences and Applications
Editorial:
Scientific Research Publishing
Referencias:
Año: 2012 vol. 3 p. 442 - 447
ISSN:
2153-117X
Resumen:
In this work, the morphology, thermal and viscoelastic properties, deformation and fracture behaviour of a commercial vinylester resin modified with a biodegradable polymer was investigated. Flexural, impact and fracture tests were performed on the blends with different polycaprolactone (PCL)contents. They exhibited improved stiffness and
fracture properties in comparison to the neat resin. From SEM analysis
of fracture surfaces,stress whitening and branced fracture paths toughening mechanisms were identified. The dependence of the glass transition temperature with PCL content was adequately fitted by simple
models available in the literature.From the results of these models along
with the results of calorimetric studies and SEM analysis,it can be concluded that the interaction between vinylester and PCL is strong enough to avoid phase separation.
